From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 5 Apr 2017 09:15:06 +0200 From: Jan Kara To: Thiago Jung Bauermann Cc: Jan Kara , Jens Axboe , linux-block@vger.kernel.org, Christoph Hellwig , Dan Williams , Tejun Heo , Tahsin Erdogan , Omar Sandoval , "Lekshmi C. Pillai" Subject: Re: [PATCH 0/10 v5] block: Fix block device shutdown related races Message-ID: <20170405071506.GA8899@quack2.suse.cz> References: <20170323003702.27571-1-jack@suse.cz> <1727592.C3UmHNa1QZ@morokweng> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 In-Reply-To: <1727592.C3UmHNa1QZ@morokweng> List-ID: On Tue 04-04-17 14:09:51, Thiago Jung Bauermann wrote: > Hello, > > Am Donnerstag, 23. M�rz 2017, 01:36:52 BRT schrieb Jan Kara: > > this is a series with the remaining patches (on top of 4.11-rc2) to fix > > several different races and issues I've found when testing device shutdown > > and reuse. The first patch fixes possible (theoretical) problems when > > opening of a block device races with shutdown of a gendisk structure. > > Patches 2-8 fix oops that is triggered by __blkdev_put() calling > > inode_detach_wb() too early (the problem reported by Thiago). Patches 9 and > > 10 fix oops due to a bug in gendisk code where get_gendisk() can return > > already freed gendisk structure (again triggered by Omar's stress test). > > > > All patches got reviewed by Tejun and also tested by Thiago (thanks!). Jens, > > can you please queue these fixes for the next merge window? Thanks! > > Lekshmi tested these patches on top of v4.11-rc4 and they worked fine. > Sorry for the delay, it takes at least 72h of running time to be sure we're > not hitting the race condition, and I had trouble with v4.11-rc2. Great. Thanks for testing! Honza -- Jan Kara SUSE Labs, CR